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The HiPro system
Operator's Manual GB
4.5
4.5
Main control valve
The crane can be operated from the main control
valve, but as soon as you have selected remote
control operation, it is impossible to operate the
main control valve levers.
The speed of a function corresponds to the extent
of the lever movement, regardless of the load and
other functions, as long as the oil flow is
sufficient. When the oil flow is insufficient, one
or more functions might reduce their speed.
When remote control is used, the oil flow is
allocated by means of PFD.
Standard functions and symbols
The order of the functions is customized for
each crane. The image on the right shows
an example of a main control valve func-
tions placed on the column.
4.6
Different stabiliser control valves
Different stabiliser control valves that you can
find on cranes:
• 2-function/4-function control valve included
in the main control valve
• 2-function control valve
• 4-function control valve.
You can operate the stabiliser control valve
manually or remotely. On remote-controlled
cranes the stabiliser control valve levers are only
to be used for emergency operation.
